Place lamb on grill over medium heat; cook 15 minutes, turning once. Brush both sides of lamb with reserved marinade and cook 10 to 20 minutes longer for medium-rare or until of desired doneness, turning lamb occasionally. Thickness of butterflied lamb will vary throughout; cut off sections of lamb as they are cooked and place on cutting board.

Tips & Techniques

*Ask butcher to bone a 4-pound lamb leg shank half and slit the meat lengthwise to spread open like a thick steak.